Weird grey spots appearing on leaves

[Ssherm]

I need some help spotting the issue w weird dark things on the leaves

 

[AKgrow]

When is the last time it got nutes and what kind?

 

[Ssherm]

Id say a bit over a week ago, over fertilized so just gave it some time before feeding, it is in flower so idk if its thats nute deficency or not w the yellow leaves i did feed it yesterday tho as i noticed the leaves just then, fed it 1 cup of 580ppm nute mix